docstr: Releases resources.
  
  :return:
docstr_tok: ["Releases","resources",".",":","return",":"]
code: def shutdown(self):
      """
      Releases resources.
  
      :return:
      """
      pass
  
file_path: analytics-zoo/pyzoo/zoo/orca/learn/spark_estimator.py
imports: from abc import abstractmethod
  from zoo.orca.learn.base_estimator import BaseEstimator
label_desc: Use image node_id 14 for calling the Estimator obj's underlying member method code with example usage: obj.shutdown() without return types